Every combat, a random gadget of yours wakes up swinging, and your artifact attack triggers pay you for it.
Sets your commander and theme, then adds about 25 cards that fit plus 20 lands. You fill in the rest.
The top 40 of 613 cards that fit

#5,497$4.44Chase Stone

#3,696$2.39Carl Critchlow

#4,752$7.31

#4,993$3.32Igor Kieryluk

#2,712$1.91Jung Park

#2,525$18.61Grzegorz Rutkowski

#1,643$2.09Aaron J. Riley

#1,855$0.31Xavier Ribeiro

#3,765$0.64Steve Prescott

#13,150$0.24

#19,018$5.96Gaboleps

#1,912$0.71Ivan Shavrin

#3,098$1.80

#4,563$0.35Dmitry Burmak

#3,747$3699.99Kaja Foglio

#805$0.35Adam Paquette

#16,768$0.14Eric Deschamps

#1,062$9.85Raymond Swanland

#2,112$2.61Wisnu Tan

#117$35.12

#9,724$2.97

#1,927$1.94Adrián Rodríguez Pérez

#8,670$0.38

#5,562$1.22Chris Rahn

#8,240$0.26

#252$0.39Jason A. Engle

#1,522$0.30

#925$0.23

#5,678$8.40

#868$1.46Daniel Ljunggren

#3,096$1.98John Avon

#14,591$0.14

#12,254$0.19Chippy

#3,237$0.19Mark Poole

#1,322$8.50Greg Hildebrandt

#8,197$0.39

#3,913$34.19Don Hazeltine

#6,755$0.68

#3,348$50.02Paolo Parente

#13,540$0.33Ivan Dedov